A power battery monitoring system combined with the user's actual driving situation

Abstract

The present invention relates to the technical field of power battery monitoring, and in particular to a power battery monitoring system combined with actual driving conditions of a user, comprising a main monitor, a state of charge monitoring unit, a vehicle-mounted terminal monitoring unit, and an early warning processing unit, wherein the state of charge monitoring unit, the vehicle-mounted terminal monitoring unit, and the early warning processing unit are all connected to the main monitor, the state of charge monitoring unit comprises an independent battery management system, the battery management system comprises a battery management central processor, a current sensor, a voltage sensor, a temperature sensor, and a battery management communication module, the battery management communication module adopts wireless communication to realize a communication connection function, the vehicle-mounted terminal monitoring unit is installed in a vehicle, the vehicle terminal monitoring unit comprises a driving information monitoring module, a road condition monitoring module, and an environmental information monitoring module, the vehicle terminal monitoring unit sends monitoring data to the main monitor, and the early warning processing unit adjusts the early warning strategy according to the data of the vehicle terminal monitoring unit.

Description

Technical Field

[0001] The present invention relates to the technical field of power battery monitoring, and in particular to a power battery monitoring system combined with actual driving conditions of users. Background Art

[0002] Automotive power batteries refer to batteries used to power electric vehicles (EVs), plug-in hybrid electric vehicles (PHEVs) and hybrid electric vehicles (HEVs). They are the main energy storage system of vehicles. They store electricity from the power grid and provide power when the vehicle is driving. Vehicles are often equipped with corresponding monitoring systems to monitor the use of power batteries. The monitoring system can monitor battery voltage, current, temperature and other parameters in real time to prevent dangerous situations such as overcharging, over-discharging and overheating of the battery, and avoid safety accidents such as thermal runaway. This is crucial to protecting the safety of battery packs, vehicles and passengers.

[0003] At present, a Chinese patent with publication number CN118584365A discloses a power battery monitoring system combined with the actual driving situation of the user, which includes two temperature sensors, a voltage sensor, a gas sensor, a signal monitoring unit, a data analysis and comparison diagnosis unit and a control unit; the first temperature sensor and the second temperature sensor are set at different positions of the power battery, the voltage sensor is used to detect the voltage of the power battery, and the gas sensor is used to detect the gas type and the gas concentration corresponding to each gas type; the signal monitoring unit is used to send the first temperature collected by the first temperature sensor, the second temperature collected by the second temperature sensor, the voltage and the gas concentration detected by the gas sensor to the data analysis and comparison diagnosis unit; the data analysis and comparison diagnosis unit is used to determine the warning level according to the first temperature, the second temperature, the voltage and the concentration of each gas; the control unit is used to perform warning processing according to the warning level. Although this monitoring system improves the thermal runaway warning capability of the power battery, the system does not combine the driver's actual driving habits, common road sections, urban weather and other factors into the battery monitoring management, and cannot provide different monitoring needs for different users. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a power battery monitoring system combined with the actual driving situation of the user. The above technical purpose is achieved through the following technical solutions: A power battery monitoring system combined with the actual driving situation of the user comprises a main monitor, a state of charge monitoring unit, a vehicle terminal monitoring unit and an early warning processing unit, wherein the state of charge monitoring unit, the vehicle terminal monitoring unit and the early warning processing unit are all connected to the main monitor, the state of charge monitoring unit comprises an independent battery management system, the battery management system comprises a battery management central processor, a current sensor, a voltage sensor, a temperature sensor and a battery management communication module, the battery management communication module adopts a wireless communication method to realize the communication connection function, the vehicle terminal monitoring unit is installed in the vehicle, the vehicle terminal monitoring unit comprises a driving information monitoring module, a road condition monitoring module and an environmental information monitoring module, the driving information monitoring module is connected to the vehicle central control and is used to collect vehicle dynamic data such as vehicle speed and mileage, the road condition monitoring module is installed at the vehicle suspension and is used to monitor the vehicle driving road condition, the environmental information monitoring module is installed at the vehicle shell and is used to collect weather information such as temperature, humidity, precipitation and the like, the vehicle terminal monitoring unit sends the monitoring data to the main monitor, and the early warning processing unit adjusts the early warning strategy according to the data of the vehicle terminal monitoring unit.

[0005] Furthermore, the early warning processing unit includes a thermal management module and an early warning prompt module. The thermal management module includes a battery cooling system and an on-board air-conditioning scheduling system. The battery cooling system achieves battery cooling by air cooling or liquid cooling. The on-board air-conditioning scheduling system includes an on-board air conditioner and an air-conditioning controller. The early warning prompt module is connected to the vehicle's central control to provide early warning information on the vehicle's central control display screen.

[0006] Furthermore, the main monitor is connected to an available energy monitoring unit, and the available energy monitoring unit uses a light sensor to implement a monitoring process.

[0007] Furthermore, the main monitor is connected to a safety status monitoring unit, which includes a gas monitoring module and a smoke monitoring module. The gas monitoring module uses a metal oxide semiconductor sensor, a non-dispersive infrared sensor, a laser light scattering sensor, etc. to implement the monitoring process, and the smoke monitoring module uses a particle sensor to implement the monitoring process.

[0008] Furthermore, the safety status monitoring unit includes a surface monitoring module, and the surface monitoring module uses a displacement sensor to implement the monitoring process.

[0009] Furthermore, the safety status monitoring unit includes a pressure monitoring module, and the pressure monitoring module uses a pressure sensor to implement a monitoring process.

[0010] In summary, the present invention has the following beneficial effects: ① Integrated monitoring system: By integrating the state of charge monitoring unit, vehicle terminal monitoring unit and early warning processing unit, the system can fully monitor the status of the power battery and provide more comprehensive battery management; ② Combine driving information to realize data collection and analysis: The on-board terminal monitoring unit can collect data such as vehicle speed, mileage, road conditions and environmental information in real time, and send it to the main monitor, which improves the real-time and accuracy of monitoring. By analyzing the road conditions and environmental information of the vehicle driving, the early warning strategy is adjusted accordingly, which can respond to potential battery problems in a timely manner, improve safety and optimize battery performance.

[0011] ③ Thermal management optimization: Through the thermal management module, including the battery cooling system and the vehicle air conditioning scheduling system, the battery temperature can be effectively controlled to prevent overheating and extend the battery life.

[0012] ④ Multi-module monitoring ensures battery safety: The safety status monitoring unit includes multiple modules such as gas monitoring, smoke monitoring, surface monitoring and pressure monitoring, which can monitor the safety status of the battery from multiple angles and provide all-round safety protection.

[0013] ⑤ User interface integration: The early warning prompt module is connected to the vehicle's central control, providing early warning information on the vehicle's central control display screen, improving user experience and operational convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application, but do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a system connection schematic diagram of the present invention. DETAILED DESCRIPTION

[0015] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figure 1 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0016] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. Example

[0017] A power battery monitoring system combined with the user's actual driving situation includes a main monitor, a charge state monitoring unit, an on-board terminal monitoring unit, and an early warning processing unit. The charge state monitoring unit, the on-board terminal monitoring unit, and the early warning processing unit are all connected to the main monitor. The main monitor adopts a microcontroller chip. The main monitor is used for data acquisition, data processing, communication display and other functions. It can record the battery usage history and working status data in detail, and provide support for battery maintenance and life prediction through big data analysis technology.

[0018] The state of charge monitoring unit includes an independent battery management system, which includes a battery management central processor, a current sensor, a voltage sensor, a temperature sensor and a battery management communication module. The battery management communication module uses wireless communication to realize the communication connection function. The on-board terminal monitoring unit is installed in the vehicle.

[0019] In this embodiment, the current sensor measures the discharge current from the battery and the charging current to the battery to confirm the battery usage and charging status. The voltage sensor measures the voltage of each battery cell and the entire battery pack to prevent overcharging or over-discharging. The temperature sensor monitors the battery temperature in real time to ensure safety and extend the battery life by using the battery within an appropriate temperature range.

[0020] The vehicle terminal monitoring unit includes a driving information monitoring module, a road condition monitoring module, and an environmental information monitoring module. The driving information monitoring module is connected to the vehicle central control and is used to collect vehicle dynamic data such as speed and mileage. The collection of speed information helps to analyze the driver's driving habits. Since the driver's driving habits and vehicle usage have a significant impact on battery range, frequent acceleration, sudden braking, and high-speed driving will increase battery consumption and reduce range. On the contrary, smooth driving and reasonable use of the energy recovery system can effectively extend the range. After collecting and analyzing the driver's driving habits, it helps the user analyze the part of the driving process that has the greatest impact on battery energy consumption, and provide driving habit improvement suggestions, which helps to improve battery safety and battery endurance. At the same time, mileage determines the degree of battery loss. The longer the mileage of the vehicle, the greater the battery loss. In order to improve battery endurance, the driver needs to implement a smoother driving strategy at this time.

[0021] The road condition monitoring module is installed on the vehicle suspension or chassis. A distance measuring sensor can be used here to monitor whether the road surface of the user's normal commuting section is flat. After collecting data information for a long time, it can determine the section of the commuting section that may cause damage to the vehicle chassis (i.e., the battery pack installation location). By integrating information from different vehicles, the user can be reminded of the road conditions of different sections on the map to help the user effectively avoid sections that may cause damage to the battery pack.

[0022] The environmental information monitoring module is installed on the vehicle shell and is used to collect weather information, such as temperature, humidity, precipitation, etc. The ambient temperature and humidity also directly affect the battery performance. In cold or precipitation environments, the battery capacity is reduced, resulting in a shortened driving range.

[0023] The vehicle terminal monitoring unit sends the monitoring data to the main monitor, and the early warning processing unit adjusts the early warning strategy according to the data of the vehicle terminal monitoring unit.

[0024] The early warning processing unit includes a thermal management module and an early warning prompt module. The thermal management module includes a battery cooling system and an on-board air-conditioning scheduling system. The battery cooling system achieves battery cooling by air cooling or liquid cooling. The on-board air-conditioning scheduling system includes an on-board air conditioner and an air-conditioning controller. When the battery cooling system cannot perform the cooling function well when working alone, the main monitor is required to control the air-conditioning controller, and use the cold air from the air-conditioning controller to intervene in the battery cooling system to assist in the cooling function. The early warning prompt module is connected to the vehicle's central control to provide early warning information on the vehicle's central control display screen.

[0025] The main monitor is connected to an available energy monitoring unit, which uses light sensors to implement the monitoring process. Fiber optic sensors are widely used in battery status monitoring due to their unique advantages, such as fiber grating sensors, fiber interferometer sensors, fiber evanescent wave sensors, fiber photoluminescence sensors and fiber scattering sensors. The above fiber optic sensors can monitor the changes in electrolyte or gas concentration during the battery charging and discharging process, thereby realizing indirect monitoring of the battery's available energy.

[0026] The main monitor is connected to a safety status monitoring unit, which includes a gas monitoring module and a smoke monitoring module. The gas monitoring module uses metal oxide semiconductor sensors, non-dispersive infrared sensors, laser light scattering sensors, etc. to implement the monitoring process. This module is used to monitor the characteristic gases released during the thermal runaway of the battery, such as CO, CO2, H2, etc., and effectively monitors indicators such as CO2, CO, temperature and pressure, and aerosol particles released before the thermal runaway of the lithium battery is triggered. The smoke monitoring module uses a particle sensor to implement the monitoring process and monitors the concentration of smoke particles in the exhaust gas. When the battery has thermal runaway, the battery will emit a certain concentration of smoke particles. The dual monitoring method can effectively improve the battery safety performance.

[0027] The safety status monitoring unit includes a surface monitoring module, which uses a displacement sensor to implement the monitoring process. By evaluating the displacement changes caused by battery surface contamination or expansion, it can effectively monitor the battery's bulging and expansion.

[0028] The safety status monitoring unit also includes a pressure monitoring module, which uses a pressure sensor to implement a monitoring process and is used to monitor changes in the internal pressure of the battery.

[0029] The above is a further detailed description of the present invention in combination with a specific implementation method, and it cannot be determined that the specific implementation of the present invention is limited to this; for technical personnel in the technical field to which the present invention belongs and related technical fields, based on the technical solution of the present invention, the expansion and replacement of operating methods and data should all fall within the protection scope of the present invention.

Claims

1. A power battery monitoring system combined with the user's actual driving situation, characterized by: It includes a main monitor, a state of charge monitoring unit, a vehicle terminal monitoring unit, and an early warning processing unit. The state of charge monitoring unit, the vehicle terminal monitoring unit, and the early warning processing unit are all connected to the main monitor. The state of charge monitoring unit includes an independent battery management system. The battery management system includes a battery management central processor, a current sensor, a voltage sensor, a temperature sensor, and a battery management communication module. The battery management communication module uses wireless communication to realize the communication connection function. The vehicle terminal monitoring unit is installed in the vehicle. The vehicle terminal monitoring unit includes a driving information monitoring module, a road condition monitoring module, and an environmental information monitoring module. The driving information monitoring module is connected to the vehicle central control and is used to collect vehicle dynamic data such as vehicle speed and mileage. The road condition monitoring module is installed at the vehicle suspension and is used to monitor the vehicle driving road conditions. The environmental information monitoring module is installed at the vehicle shell and is used to collect weather information, such as temperature, humidity, precipitation, etc. The vehicle terminal monitoring unit sends the monitoring data to the main monitor, and the early warning processing unit adjusts the early warning strategy according to the data of the vehicle terminal monitoring unit.

2. A power battery monitoring system according to claim 1 that combines the actual driving situation of the user, characterized in that: The early warning processing unit includes a thermal management module and an early warning prompt module. The thermal management module includes a battery cooling system and an on-board air conditioning scheduling system. The battery cooling system achieves battery cooling by air cooling or liquid cooling. The on-board air conditioning scheduling system includes an on-board air conditioner and an air conditioning controller. The early warning prompt module is connected to the vehicle central control and provides early warning information on the vehicle central control display screen.

3. The power battery monitoring system according to claim 1, characterized in that: The main monitor is connected to an available energy monitoring unit, and the available energy monitoring unit uses a light sensor to implement a monitoring process.

4. The power battery monitoring system according to claim 1, characterized in that: The main monitor is connected to a safety status monitoring unit, which includes a gas monitoring module and a smoke monitoring module. The gas monitoring module uses a metal oxide semiconductor sensor, a non-dispersive infrared sensor, a laser light scattering sensor, etc. to implement the monitoring process, and the smoke monitoring module uses a particle sensor to implement the monitoring process.

5. The power battery monitoring system according to claim 4, characterized in that: The safety status monitoring unit includes a surface monitoring module, and the surface monitoring module uses a displacement sensor to implement a monitoring process.

6. The power battery monitoring system according to claim 5, characterized in that: The safety status monitoring unit includes a pressure monitoring module, and the pressure monitoring module uses a pressure sensor to implement a monitoring process.

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